From George Orwell's 1984. The guy was 20 years out, but other than that fairly accurate... It's the ability to hold two separated and completely contradictory statements in your head and believe that both are true

Dubya: "We are bringing democracy to Iraq" (while bringing a dictatorship to the US via the "Patroit" act, Florida elections etc etc etc).

Words combined into a sentence, paragraph, speech, etc. SAY one thing, yet MEAN something different. As the American Native Peoples called the white man's words - He speaks with forked tongue

The council has agreed to the demands of all those detained without charge; they will be allowed weekly phone calls with family members.
WHAT IS NOT SAID:::The calls will be monitored, and the charges will be so expensive that the common man/woman's family cannot pay for the call.

Doublespeak here ought to be doublethink. The person who first defined it must have had doublethink confused with newspeak and thus combined the two. The definition given is for doublethink.

Whatever was true now was true from everlasting to everlasting. It was quie simple All that was needed was an unending series of victories over your own memmory. "Reality control," they called it; in Newspeak, "doublethink."

The medical term is echolalia which is the involuntary parrotlike repetition of a word or phrase just spoken by another person. Echolalia is a feature of schizophrenia. In Kurt Vonnegut's "Breakfast of Champions" one of the characters suffers from chronic doublespeak.

K: What did you say?
M: What did you say?
K: Are you crazy?
M: Are you crazy?
K: Dammit.
M: Dammit.